/*
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
 *
 * Copyright 2012 Neil C Smith.
 *
 * This code is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License version 2 only, as
 * published by the Free Software Foundation.
 *
 * This code is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
 * version 2 for more details.
 *
 * You should have received a copy of the GNU General Public License version 2
 * along with this work; if not, see http://www.gnu.org/licenses/
 * 
 *
 * Linking this work statically or dynamically with other modules is making a
 * combined work based on this work. Thus, the terms and conditions of the GNU
 * General Public License cover the whole combination.
 *
 * As a special exception, the copyright holders of this work give you permission
 * to link this work with independent modules to produce an executable,
 * regardless of the license terms of these independent modules, and to copy and
 * distribute the resulting executable under terms of your choice, provided that
 * you also meet, for each linked independent module, the terms and conditions of
 * the license of that module. An independent module is a module which is not
 * derived from or based on this work. If you modify this work, you may extend
 * this exception to your version of the work, but you are not obligated to do so.
 * If you do not wish to do so, delete this exception statement from your version.
 *
 * Please visit http://neilcsmith.net if you need additional information or
 * have any questions.
 */

package org.jaudiolibs.pipes.impl;

import java.lang.reflect.Array;

/**
 *
 * @author Neil C Smith (http://neilcsmith.net)
 */
class Utils {

    private Utils() {}

    static <T> T[] arrayAdd(T[] array, T obj) {
        if (obj == null) {
            throw new NullPointerException();
        }
        for (int i=0; i < array.length; i++) {
            if (array[i] == obj) {
                return array;
            }
        }
        int length = array.length + 1;
        T[] ret = (T[]) Array.newInstance(array.getClass().getComponentType(), length);
        System.arraycopy(array, 0, ret, 0, length - 1);
        ret[length - 1] = obj;
        return ret;
    }

    static <T> T[] arrayRemove(T[] array, T obj) {
        if (obj == null) {
            throw new NullPointerException();
        }
        int idx = -1;
        for (int i=0; i < array.length; i++) {
            if (array[i] == obj) {
                idx = i;
                break;
            }
        }
        if (idx == -1) {
            return array;
        }
        int length = array.length - 1;
        T[] ret = (T[]) Array.newInstance(array.getClass().getComponentType(), length);
        System.arraycopy(array, 0, ret, 0, idx);
        System.arraycopy(array, idx + 1, ret, idx, length - idx);
        return ret;
    }

}
